Since 1989, Guangdong has topped the total GDP rankings among all provincial-level divisions, with Jiangsu and Shandong second and third in rank. According to state statistics, Guangdong's GDP in 2011 reached RMB 5,267 billion, or US$815.53 billion, making its economy roughly the same size as the Netherlands. Since 2011, Guangdong has the highest GDP among all provinces of Mainland China. The province contributes approximately 12% of the PRC's national economic output, and is home to the production facilities and offices of a wide-ranging set of Chinese and foreign corporations. Guangdong also hosts the largest import and export fair in China called the Canton Fair in Guangdong's capital city Guangzhou.

One should note that "Canton", though etymologically derived from Cantão (the Portuguesetransliteration of "Guangdong"), refers only to the provincial capital instead of the whole province, as documented by authoritative English dictionaries. The local people of the city of Guangzhou (Canton) and their language are still commonly referred to as Cantonese in English. Because of the prestige of Canton and its accent, Cantonese sensu lato can also be used for the phylogenetically related residents and Chinese dialects outside the provincial capital.

Chinese administration and reliable historical records in the region began with the Qin dynasty. After establishing the first unified Chinese empire, the Qin expanded southwards and set up Nanhai Commandery at Panyu, near what is now part of Guangzhou. The region was independent as Nanyue between the fall of Qin and the reign of Emperor Wu of Han. The Han dynasty administered Guangdong, Guangxi, and northern Vietnam as Jiaozhi Province, southernmost Jiaozhi Province was used as a gateway for traders from the west—as far away as the Roman Empire. Under the Wu Kingdom of the Three Kingdoms period, Guangdong was made its own province, the Guang Province, in 226.[citation needed]

As time passed, the demographics of what is now Guangdong gradually shifted to (Han) Chinese dominance as the populations intermingled due to commerce along the great canals, and abruptly shifted through massive migration from the north during periods of political turmoil and nomadic incursions from the fall of the Han Dynasty onwards. For example, internal strife in northern China following the rebellion of An Lushan resulted in a 75% increase in the population of Guangzhou prefecture between 740s–750s and 800s–810s.[10] As more migrants arrived, the local population was gradually assimilated to Han Chinese culture[11] or displaced. From the 10th to the 12th century, Persian women were to be found in Guangzhou (Canton), some of them in the 10th century like Mei Zhu in the harem of the Emperor Liu Chang, and in the 12th century large numbers of Persian women lived there, noted for wearing multiple earrings and "quarrelsome dispositions".[12][13] Multiple women originating from the Persian Gulf lived in Guangzhou's foreign quarter, they were all called "Persian women" (traditional Chinese: 波斯婦; simplified Chinese: 波斯妇; pinyin: bō sī fù; Cantonese Jyutping: Bo1si1fu5).[14]

Together with Guangxi, Guangdong was made part of Lingnan Circuit (political division Circuit), or Mountain-South Circuit, in 627 during the Tang dynasty. The Guangdong part of Lingnan Circuit was renamed Guangnan East Circuit guǎng nán dōng lù in 971 during the Song dynasty (960–1279). "Guangnan East" is the source of "Guangdong".[citation needed]

Since the 16th century, Guangdong has had extensive trade links with the rest of the world. European merchants coming northwards via the Straits of Malacca and the South China Sea, particularly the Portuguese and British, traded extensively through Guangzhou. Macau, on the southern coast of Guangdong, was the first European settlement in 1557.[citation needed]

Guangdong was also the major port of exit for labourers to Southeast Asia and the West in the 19th century, such as to the United States and Canada. As a result, many overseas Chinese communities have their origins in Guangdong. The Cantonese language, therefore, has proportionately more speakers among overseas Chinese people than mainland Chinese. Consequently, many Mandarin Chinese words originally of foreign origin come from the original foreign language by way of Cantonese. For example, the Mandarin word níngméng (simplified Chinese: 柠檬; traditional Chinese: 檸檬), meaning "Lemon", came from Cantonese, in which the characters are pronounced as lìng mung.[16][17] In the United States, there is a large number of Chinese who are descendants of immigrants from the city of Taishan (Toisan in Cantonese), who speak a distinctive dialect related to Cantonese called Taishanese (or Toishanese).

During the 1850s, the Taiping Rebellion, whose leader Hong Xiuquan was born in Guangdong and received a pamphlet from a Protestant Christian missionary in Guangdong, became a widespread civil war in southern China. Because of direct contact with the West, Guangdong was the center of anti-Manchu and anti-imperialist activity. The generally acknowledged founder of modern China, Sun Yat-sen, was also from Guangdong.

In recent years, the province has seen extremely rapid economic growth, aided in part by its close trading links with Hong Kong, which borders it. It is now the province with the highest gross domestic product in China.

In 1952, a small section of Guangdong's coastline was given to Guangxi, giving it access to the sea. This was reversed in 1955, and then restored in 1965. Hainan Island was originally part of Guangdong, but it was separated as its own province in 1988.

Guangdong has a humid subtropical climate (KöppenCfa inland, Cwa along the coast), though nearing a tropical climate in the far south. Winters are short, mild, and relatively dry, while summers are long, hot, and very wet. Average daily highs in Guangzhou in January and July are 18 °C (64 °F) and 33 °C (91 °F) respectively, although the humidity makes it feel much hotter in summer. Frost is rare on the coast but may happen a few days each winter well inland.

The economy of Guangdong is large enough to be compared to that of many countries. in 2014, the gross domestic product (GDP) is about $1104.05 million, Guangdong has been the largest province by GDP since 1989 in Mainland China. Guangdong is responsible for 10.66 percent of the China' $10.36 trillion GDP. Guangdong's GDP is larger than that of Indonesia ranking 16th in terms of US dollar or Purchasing Power Parity. Comparable to that of country subdivisions in dollar terms, Guangdong's GDP is larger than that of all but 6 country subdivisions: England, California, Texas, New York and Tokyo. It is comparable to the GDP of the Los Angeles metropolitan area.

Shops in one of the streets of Guangzhou specialize in selling various electronic components, supplying the needs of local consumer electronics manufacturers. The shop in front is in the LED business.

After the communist revolution and until the start of the Deng Xiaoping reforms in 1978, Guangdong was an economic backwater, although a large underground, service-based economy has always existed. Economic development policies encouraged industrial development in the interior provinces which were weakly joined to Guangdong via transportation links. The government policy of economic autarky made Guangdong's access to the ocean irrelevant.[citation needed]

Deng Xiaoping's open door policy radically changed the economy of the province as it was able to take advantage of its access to the ocean, proximity to Hong Kong, and historical links to overseas Chinese. In addition, until the 1990s when the Chinese taxation system was reformed, the province benefited from the relatively low rate of taxation placed on it by the central government due to its post-Liberation status of being economically backward.[citation needed]

Guangdong's economic boom began with the early 1990s and has since spread to neighboring provinces, and also pulled their populations inward. The economic growth of Guangdong province owes much to the low-value added manufacturing which characterized (and in many ways still defines) the province's economy following Deng Xiaoping's reforms. Guangdong is not only China's largest exporter of goods, it is the country's largest importer as well.[19]

The province is now one of the richest in the nation, with the most billionaires in mainland China,[20] the highest GDP among all the provinces, although wage growth has only recently begun to rise due to a large influx of migrant workers from neighboring provinces. In 2011, Guangdong's aggregate nominal GDP reached 5.30 trillion RMB (US$838.60 billion) with a per capita GDP of 47,689 RMB.[21] By 2015, the local government of Guangdong hopes that the service industry will account for more than 50 percent of the provinces GDP and high-tech manufacturing another 20 percent.[19]

In 2009, Guangdong's primary, secondary, and tertiary industries were worth 201 billion yuan, 1.93 trillion yuan, and 1.78 trillion yuan respectively.[22] Its per capita GDP reached 40,748 yuan (about US$5,965).[23] Guangdong contributes approximately 12% of the total national economic output.[24] Now, it has three of the six Special Economic Zones: Shenzhen, Shantou and Zhuhai. The affluence of Guangdong, however, remains very concentrated near the Pearl River Delta.

In 2008 its foreign trade also grew 7.8% from the previous year and is also by far the largest of all of China. By numbers, Guangdong's foreign trade accounts for more than a quarter of China's US$2.56 trillion foreign trade or roughly US$683 billion.[25]

Hainan Province part of Guangdong Province until 1988.
Guangzhou part of Guangdong Province until 1947; dissolved in 1954 and incorporated into Guangdong Province.

Guangdong officially became the most populous province in January 2005.[5][6] Official statistics had traditionally placed Guangdong as the 4th most populous province of China with about 80 million people (also, Sichuan, traditionally the most populous province, was divided into Sichuan and Chongqing in 1997) but recently released information suggests that there are an additional 30 million migrants who reside in Guangdong for at least six months every year, making it the most populous province with a population of more than 110 million.[38] The massive influx of migrants from other provinces, dubbed the "floating population", is due to Guangdong's booming economy and high demand for labor. If Guangdong were an independent nation, it would rank among the twenty largest countries of the world by population, more populous than France, Germany, or the United Kingdom, and more populous than the largest three USstates (California, Texas, and New York) combined.

Guangdong is also the ancestral home of large numbers of overseas Chinese. Most of the railroad laborers in Canada, Western United States and Panama in the 19th century came from Guangdong. Many people from the region also travelled to the US / California during the gold rush of 1849, and also to Australia during its gold rush a decade or so later.

Guangdong has a highly unbalanced gender ratio that is among the highest of all provinces in China. According to a 2009 study published in the British Medical Journal, in the 1–4 age group, there are over 130 boys for every 100 girls.[41]

Guangdong is governed by a dual-party system like the rest of China. The Governor is in charge of provincial affairs; however, the Communist Party Secretary, often from outside of Guangdong, keeps the Governor in check.

Hong Kong and Macau, while historically parts of Guangdong before becoming colonies of the United Kingdom and Portugal, respectively, are special administrative regions (SARs). Furthermore, the Basic Laws of both SARs explicitly forbid provincial governments from intervening in local politics. As a result, many issues with Hong Kong and Macau, such as border policy and water rights, have been settled by negotiations between the SARs' governments and the Guangdong provincial government.

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The central region, which is also the political and economic center, is populated predominantly by Cantonese speakers, though the influx in the last three decades of millions of Mandarin-speaking immigrants has diminished Cantonese linguistic dominance. This region is associated with Cantonese cuisine. Cantonese opera is a form of Chinese opera popular in Cantonese speaking areas. Related Yue dialects are spoken in most of the western half of the province.

Mandarin is the language used in education and government and in areas where there are migrants from other provinces, above all in Shenzhen. Cantonese maintains a strong position in common usage and media, even in eastern areas of the province where the local dialects are non-Yue ones.

* - not including the new districts which are not registered under the Ministry of Civil Affairs (not included in the total Districts' count)
** - direct-piped cities - does not contain any county-level divisions